The Nashville woman's 13-year-old grandson was trapped in the vehicle but not seriously injured in the 3:25 p.m. crash along M-50 near Freeport Avenue in Bowne Township. Two other grandsons, ages 10 and 13, were not injured.

State police said the woman's vehicle was traveling east on M-50 when it drifted and hit a mailbox. The driver over-corrected and lost control of the car, causing it to spin into a ditch on the south side of the road. The car struck a large stump on the driver's side.

The woman died at the scene, state police Trooper David Cope said. It wasn't clear whether she suffered a medical condition or was distracted prior to the crash.

The 13-year-old was trapped in the back of the car for an hour and a half. An ambulance transported him to Helen DeVos Children's Hospital with injuries that are not life-threatening, Cope said.

The two other passengers were able to climb out the car. They went home with relatives.

Angie Jackson covers public safety and breaking news for MLive/The Grand Rapids Press. Email her at ajackso3@mlive.com, and follow her on Twitter.